Joint Channel and Phase Noise Estimation in MIMO-OFDM Systems

IEEE Radio and Antenna Days of the Indian Ocean

无线电电子学

Ngebani, I.M.^1 ; Chuma, J.M.^2 ; Zibani, I.^1 ; Matlotse, E.^1 ; Tsamaase, K.^1

Faculty of Engineering Technology, Department of Electrical Engineering, University of Botswana, Private Bag 0061, Gaborone, Botswana^1

Department of Electrical Engineering, Botswana International University of Science and Technology, Private Bag 24, Palapye, Botswana^2

关键词: 64-quadrature amplitude modulations;    Common phase errors;    High spectral efficiency;    Intercarrier interference;    Multiple input multiple output techniques;    Multiple transmit and receive antennas;    Single input single output case;    Wireless communication system;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/198/1/012007/pdf
DOI  :  10.1088/1757-899X/198/1/012007

来源: IOP

【 摘 要 】

The combination of multiple-input multiple-output (MIMO) techniques with orthogonal frequency division multiplexing (OFDM), MIMO-OFDM, is a promising way of achieving high spectral efficiency in wireless communication systems. However, the performance of MIMO-ODFM systems is highly degraded by radio frequency (RF) impairments such as phase noise. Similar to the single-input single-output (SISO) case, phase noise in MIMO-OFDM systems results in a common phase error (CPE) and inter carrier interference (ICI). In this paper the problem of joint channel and phase noise estimation in a system with multiple transmit and receive antennas where each antenna is equipped with its own independent oscillator is tackled. The technique employed makes use of a novel placement of pilot carriers in the preamble and data portion of the MIMO-OFDM frame. Numerical results using a 16 and 64 quadrature amplitude modulation QAM schemes are provided to illustrate the effectiveness of the proposed scheme for MIMO-OFDM systems.